Machine eor washing and separating ores aeter being pulverized



H. TRUMBULL.

Ore Washer.

N0. 25,060. PatentedAu g. 9, 1859.

N. PEYERS, Photo-Lithognphsr. Wuhin mmmm c.

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HORACE TRUMBULL, OF JERSEY CITY, NEW JERSEY.

MACHINE FOR WASHING AND SEPARATING-ORES AFTER BEING P-ULVERIZED.

Specification of Letters Patent No. 25,060, dated August 9, 1859.

T 0 all whom it may concern:

Be it known that I, HORACE TRUMBULL, of Jersey City, in the county of Hudson and State of New Jersey, have invented an Improvement in Machines for Dressing Ores; and I do hereby declare that the foling is a full, clear, and exact description of the same, reference being had to the accom panying drawings, making a part of this specification, in which Figure 1, represents a longitudinal sectional elevation taken through Fig. 2, which is a plan View of the machine.

Similar letters of reference indicate like parts in both figures.

My invention relates to an improvement in washing and separating pulverized ores and matters, and for treating ores of zinc or any pulverulent ores, or mineral matters where machinery is used known as a rotating buddle or a rotating table which inclines from the center to the circumference. The ores or matters are held in mechanical suspension in water and made to flow on the table near the axisthereof from whence they are carried by the force of the currenttoward the outer edge and delivered into com partments arranged immediately under the edge of the table according to their specific gravity and the component parts of the ores or matters respectively.

In this kind of machinery which has been suggested for the above named purposes great practical difiiculties arise in effecting the complete purification or separation of the metal from the fine particles of mineral with which it is mechanically combined. For obviating these objections revolving and fixed brushes have been tried which come in contact with the pulverized ore as it passes over the table for the purpose of keeping it thoroughly agitated and thereby effect a more perfect separation. These devices though aiming at the correct principle have not attained the desired object, for with either the revolving or fixed brushes the ore is impeded in its progress and water allowed to pass from it leaving it in its unseparated condition upon the table and in the brushes.

My invention consists in arranging upon suitable frames, to all of which are given an oscillating motion and in pivoting these brushes to the frames so that they will press upon the surface of the table or buddle with just sufficient gravity to keep the ore in constant agitation without scraping or wiping it in heaps and retarding its passage over the table as is the case with revolving or fixed brushes; and also in giving to these brushes a greater speed than that of the buddle which is to be determined by the consistency or qualities of ores to be subjected to the separating process, described as follows:

A, A, is the frame work for supporting the several parts about to be described. I11 the center of this frame is a movable upright shaft B, to which is fixed the rotary table C, which has a decline from the center to the circumference of about six inches, or more or less according to circumstances. The table or what is technically termed buddle, is operated so as to have a regular rotary motion by means of a sheave E, attached to the shaft B, by which with a band the table is set in motion. Surrounding the axle B, and at a suitable distance above the center of the buddle C, is a circular gutter G the bottom of which is either grated or perforated with small holes, and

which is divided into two unequal apartments; the smaller one F, which takes about one quarter of the area of the trough or gutter, receives the matters to be treated (which are held in suspension in water) through vertical spout H, communicating with an inclined gutter H, and delivers them on to the table C; the larger compart: ment F, is supplied, by means of spout I, and gutter I, with a stream of water, which it delivers and distributes also over the table. The circular trough is suspended from the frame A, by vertical hangers J, J.

Surrounding the trough above described and placed concentric with it is an annular ring K, supported by four posts L, and bearing upon friction rollers pivoted to said posts. This ring has an oscillating motion transmitted to it from shaft M, upon which are keyed two eccentrics N, N, operating connecting rods P, P, placed opposite each other upon the ring K. From this ring procecd, radially arms R, R, R, R, inclined parallel with the surface of the table, and from these arms are hung brushes S, S, two or more to each arm, which are fixed to arms T, pivoted at right angles with the said arms. The arms of the brushes are perforated so as to adjust them to or from the arms as they may be deemed necessary.

The brushes may vary in size and kind, or

any number may be used and disposed at suitable distances apart upon the table, and these placed upon the arms so as to be taken off When a less number is required.

U, is a supplementary water spout through which Water issues in small jets upon the table to supply the table with an additional quantity. Surrounding the table and just below its edge are channels to re ceive and deliver the separated matters fall ing from the table.

The comparative increased speed of the brushes over the table is exceedingly important to the perfect operation of the machine, for by this means the matters receive a thorough agitation and the lighter particles in their regular succession are more rapidly carried off and the separation rendered more perfect and complete.

What I claim as my invention and desire to secure by Letters Patent, is:

The application to a rotary buddle or table such as herein above described, of vibrating brushes, When the same are arranged and operated essentially as herein above specified.

HORACE TRUMBULL. Witnesses J. W. CooMBs, R. S. SPENCER. 

